Title :
Effect of scattering in measurements of rain attenuation by passive radiometry
Author :
Chadha, R. ; Lane, Jo Ann
Author_Institution :
Appleton Laboratory, Slough, UK
Abstract :
A sun-tracking beam-switching radiometer has been used at a frequency of 37 GHz to measure attenuation caused by rain on earth-space paths. The attenuation derived indirectly from data on the thermal noise emitted by the rain underestimates the true attenuation by 10 to 15% and 30 to 35% for vertical and horizontal polarisations, respectively, for elevation angles in the range 10°¿35°.
Keywords :
electromagnetic wave absorption; radiometry; radiowave propagation; rain; tropospheric electromagnetic wave propagation; 37 GHz; EHF; passive radiometry; rain attenuation; sun tracking beam switching radiometer; thermal noise;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19770130
